Tentering device



Dec. 18, 1934. R. KRUG TENTERING DEVICE Filed Juhe 10, 1933 3Sheets$heet l '1 I I l INVENTOR fin 25 59, I BY R. KRUG 1,984,377

TEN'IERING DEVICE Dec. 18, 1934.

Filed Ju ne 10, 1933 s SheetsSheet 2 JO J BY {a g &

A TTORNEY Dec. 18, 1934.

l. R. KRUG 1,984,377

TENTERING DEVICE Filed June 10, 1933 3 Sheets-Sheet 5 INVENTOR, r2 04.K?

Patented Dec. 18, 1 934 i UNITED STATES PATENT, OFFICE TENTERING DEVICEIra R. Krug, Philadelphia, Pa., assignor of fortyfive one-hundredths to0. Earl Beatty and'ten one-hundredths to Mildred M. Krug, Philadelphia,Pa. t

Application June 10, 1933, Serial No. 675,156

8 Claims. (01.26-62) The object of the invention is to provide im- Fig,6 is a vertical section similar to Fig. 3, but

provements in tentering devices, broadly, but showing a modified form ofthe device.- more particularly in the perfection of construc- Referringto Figs; 1 to inclusive, the partions adapted to be employed in existingmaticular machine with which the improved ten- 5 chines, by means oflittle or no alterations to tering device is employed, comprises a bodynor- 5 5 the latter. tion 1 having a channelled recess 2, bounded uponFurther objects of the invention comprise nuone side by a wall 8, theupper surface 4 of which merous details of construction, among which areprovides a track, while the opposite side of said the followingz-animproved design of the upper recess is limited by an upstanding wall 5,to the 10 and lower plates of the link chain proper to overupper portionof which is secured by any suitable 10 come stretching; an improvedarrangement of means a plate 6, which overhangs said recess and theroller and bushing in the link chain proper provides upon its under sidea downwardly dito relieve the pulling strain on the roller; an rectedtrack surface 7. improved arrangement of the link arms as a Within saidrecessprogressively moves one of part of the upper platen or plate; animproved a pair of link chains, each of which comprises a "16arrangement of the control guard, toprevent series of upper and lowerlinksr8 and 9, the adthe control from coming in contact with the jacentforward ends of each pair of said links guide and thereby picking upoil; an improved being spaced apart by means of rollers 10, whilearrangement of the rear or outer roller to prethe rearward portions ofeach suchpair of links 20 vent friction on the guide at this point; animare positioned upon the opposite sides of the "20 proved arrangementof the nipper fulcrum pin forward ends of the succeeding pair, between ie bo y arms to prevent Wear at this P which is a second roller 11, andso on rearwardly an impr v arrangement of the pp look-fol around theendlesslink chain. Said rollers bear holdin the nipp p n to preventnon-producagainst the inner surface 12 of the wall 3 of said tive wear;an improved arrangement for the debody 1, d th upper nd lower li k of h"25 taohment of t y from the link Chain to pair are essentially similar,except that the forpr v f rapid r p n the p em n mer extend laterally(as shown in Fig. 5) "to of malleable Castings with rolled steelstampings form a plate 13, having a longitudinally elont v a u if i y inn l str n th f h gated aperture 14, and so arranged that the link chain,and thereby reducing the Weight extreme lateral portion of the uppersurface of '30 W Sacrificing strength; also the reduction said platecooperates with the secondtrack surof the Wea p the several links and pthe face 7, hereinbefore referred to, said upper link machineitself, asWel as t e cti in the in the opposite direction to said plate extensionpower consumpt n a d pp D also being provided with a relatively narrowextenan improvement in the design of the bolt which sion ls hereinafteragain referred to. =35 connects the links together, to prevent wear be-Referring particularly to Fig. 4, the nippertween t e r sp bolts and thelink p supporting structure comprises a laminated base and insteaddistributing the wear over the entire d an upwardly extending yoke. Saidbase com- 7 le t of the bushing b in a instance; prises lower and upperplates'16 and 17, the lower '40 and to provide further details ofconstruction m t being provided with an aperture 18, the 40 andoperation as Will hereinafter fully app in metal from which is depressedto form a flattened the followi descr p W d in i stirrup 19, whichnormally extends below the link tion with the acco p y g drawings, inWhich extension 15, and prevents said base from rising Fig. 1 is a frontelevational view of a construcfron aid link, while the upper of saidplates is io comprising one embodiment of the invenprovided with arelatively narrowaperture 20, in '45 tion; substantially centralalignment with respect to 2 is a p p a View of the vsame; said firstaperture and for a purpose hereinafter is a e part elevational and p r Vdescribed, the laterally opposite portions of said cal sectional View ot same; plates being provided respectively with apertures -'Fig. 4 is asimilar view of a portion of the 16 and 17 in alignmentwith the aperture14 in 50 same, showing the ipp pp member the link plate 13. To therearward portion of both in normal (SOIld line) position and in tiltedsaid base is secured by rivets 21 (01" in any other (dot-and-dash line)p t for va m suitable manner), a third plate 22, which aids in its s pplink; i securing the first two plates rigidly togethen'the a Fig. 5 is atop plan view of the link alone; and, upper (1'7) of said first twoplatescomprising the 55 central portion of a yoke, which is providedwith an aperture 22 and also comprises integral longitudinally spaced,upwardly extending, preferably parallel arms 23, said arms both beinginitially in the plane of said plate and struck-up so as to projectfreely in one lateral direction and being provided with alignedpolygonally shaped apertures 24, within and between which extends across pin or bolt 25, having laterally and downwardly directed flattenedsurfaces 26 and 27, with which yieldingly cooperates selectively thespringpressed pin 28 carried by the hollow 'nut"29,ex tending radiallyinto the shank 30,of.a.nipper, from which an integral arm,-31 extendssubstantially upwardly, and a longitudinally enlarged, depending,integral plate 32 extends normally downwardly. The forward extensionofthe central portion of said yoke comprises a platen across which thecloth normally passes, as :hereinafter referred to.

"To the link chain side. of this'last-named plate is secured by any:suitable means a detachable plate 33 provided with a-dependingnipperedge 34, and centrally with a'pair of spaced, laterally anddownwardlydirected, parallel arms 35, the

free end portions of which are connectedby an anti-frictionrollerrivetorthe like 36, which also extends-thru the slot 37 between the upper andlower arms'38 and 39 of a toggle member, the lower arm of which-latteris provided witha-dependjug-enlargement 40 for a purpose hereinafterdescribed and said toggle-member as a whole being pivotally mounted upona pin 41, which extends between a pail-f spaced lugs 42 integrally-car-:ried by, and extending upwardly and laterally from, the centralportionof the plate 22 between the arms 23 of said yoke. Said laminated baseafter which its nut is tightened. so as 'to tightly bind the severalparts together. A reversal of this operation, that is, 'first looseningthe nut, then slightly rotating the bolt, and finally withdrawingitlongitudinally from said plate aperture 14, :permits the readyseparation of said-yoke from its supporting link.

In a machine, at least one function of which is to dry textilematerials, it is well known that the paths of the two spaced link chainsand 'tentering mechanisms first receive the edge portions of thecloth,and'then gradually diverge-until the oppositely positioned edges ofsaid-cloth are properly positioned'beneaththenippers upon the-platen ofthe tentering devices, at'which time said nippers cooperate with saidplaten to grip said'edge portions and prevent them fromshrinking towardseach other, as the cloth dries or as :the result of any other change inthe condition thereof. Referring to Fig. 3, the dot-and-dash line 45indicates a preliminary position of the cloth-45 upon-the uppersurface-of the laminatedbase, in which position the said edgeportion ofthe cloth supports the rounded enlarged portion 40 of the togglehereinbefore described in raised position, with the result that the arms35 are also in raised position and the nipper edge 34 is swung about thecross pin or bolt 25, freely above said base and outofcontact with theclothdrops into the recess formed by'the apertures '18 and 20, andpermits the nipper to automatically move into the position shown inFigs. 1, 3 and 6, where it tightly grips and binds the cloth 45 againstsaid platen or base, the enlarged portion 40 of said toggle beingshielded from oil and dirt by the stirrup 19.

Referring now .to Fig. 6, it will be notedzthat the wall 15 is pr.ovidedwitha guide-:46, which is of angular cross section and provides an undersurface 47, forming a track for an anti-friction roller 48, rotatablycarried by an angular extension 49 'of-the link plate 50, whichcorresponds in all other bushings 53, around which the rollers revolve,

thereby placing the entire strain upon thesaid pins and bushings, andrelieving the rollers from such. strain so that their wear-will be bothminimized'and confined to servingas a purely antifriction means.Also,'as abovereferredto, it will be realized that the platen basei6--17 and the plate 13 ineach instance comprise integral parts of theupper link 8 of each pair,'thus lessening'the number of parts,minimizingweight, cost of production andassernbly, as "well asincreasing the ultimate strength of the resulting structure.

Again, the provision-of two or more'flattened'surfaces upon the fulcrumpin25, permits'the locking pin 28 to retain said nipper in open orinoperative position when not in use, with a consequent saving in thewear between the nipper edges and the adjacentplaten surface upon'theupper base member '17 I am aware that the invention may be embodied inother specific forms without departing from the spirit or essentialattributes thereof, and I therefore desire the present embodiment to beconsidered in all respects as illustrative and not restrictive,reference being hadto theaccompanying claims rather than to theforegoing description to indicatethe scope of theinvention.

Having thus described my invention what .I claim anddesire to securebyLettersPatentof the United States is 1. In a tentering machine, thecombination of a track, a chain link movable with respect tosaid track,a bracket secured to saidlink and'comprising a platen and a struck-uparm, an oscillatable nippercarried by said arm, and a togglepivotallymounted with .respect to said platen and connected to said nipper, saidtoggle when resting upon a web lying upon said platen being operative tomaintain said nipper in spaced position with respect tosaidplaten, andwhensuch web is withdrawn from beneath said toggle, saidlnipper beingpermitted to engage and bind such web against said platen.

2. Ina tenteringmachine, the combination of a track, a chain linkmovable with respect to said track and comprising a lateral extension inone direction cooperating with said track to prevent tilting of saidlink, and a lateral extension in another direction, abase platesecuredtosaid first extension and provided with'a depressed stirrupencircling said second extension, and a nippersupporting bracketnormally secured to said base plate.

3. In a tentering machine, the combination of a track comprising twobearing surfaces, a chain link movable with respect to said track andcomprising a lateral extension in one direction and relativelyabbreviated extension in the opposite direction, anti-friction meanscarried by said first extension and cooperating with one of said bearingsurfaces, a base plate secured to said link and provided with adepressed stirrup encircling said second extension, and cooperating withthe other bearing surface, and a nipper-supporting bracket normallysecured to said base plate.

4. In a tentering machine, the combination of a track comprising twobearing surfaces, a chain link movable with respect to said track andcomprising a lateral extension in one direction cooperating with one ofsaid surfaces, and a second lateral extension in another direction, abase plate detachably secured to said link and provided with a depressedstirrup encircling said second extension and cooperating with the otherof said surfaces, and a nipper-supporting bracket normally secured tosaid base plate.

5. In a tentering device, the combination of a movable base member, asubstantially U-shaped bracket secured to said member, said bracketcomprising a pair of laterally positioned struckup arms, and a lateralextension of a portion of said bracket between said arms forming aplaten, a nipper pivotally carried by and between said arms, a grippingmember detachably carried by said nipper, and a toggle also pivotallycarried by said bracket and loosely connected to said nipper, andadapted to rest upon a web extending beneath said gripping member, tomaintain said gripping member in inoperative position until such web isremoved from beneath said toggle.

6. In a tentering device, the combination of a movable base member, asubstantially U-shaped bracket secured to said member, said bracketcomprising a pair of laterally extending spaced positioned struck-uparms, and a lateral extension of a portion of said bracket between saidarms forming a platen, a nipper pivotally carried by and between saidarms, a gripping member detachably carried by said nipper, and a togglealso pivotally carried by said bracket and loosely connected to saidnipper, and carried by said bracket and loosely connected to saidnipper, and adapted to rest upon a web extending beneath said grippingmember, to maintain said gripping member in inoperative position untilsuch web is removed from beneath said toggle, said bracket extensionbeing provided with an aperture thru which said toggle is adapted toextend downwardly when unsupported by a web, and said base thenprotecting said toggle in its lowermost position.

7. In a tentering device, the combination of a chain link, comprising alateral extension, a base member comprising a depressed stirrup normallyencircling said extension and secured to said link at a point removedfrom said extension, a bracket of substantial U-shape and comprising apair of laterally extending spaced arms and a lateral extension of aportion of said bracket forming a platen beneath the space between saidarms, a nipper pivotally carried by and between said arms, a grippingmember detachably carried by said nipper, and a toggle also pivotallycarried by said bracket and loosely connected to said nipper and adaptedto rest upon a web extending beneath said gripping member, to maintainsaid gripping member in inoperative position until such web is removedfrom beneath said toggle.

8. In a tentering device, the combination of a track, a chain linkmovable with respect to said

